<template>
  <div id="detail">
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
      </div>
      <div slot="center" class="title">
      <div v-for="(item,index) in titles"
           class="title-item" :class="{active: index === currentIndex}"
           @click="titleClick(index)">
        {{item}}
      </div>
    </div>
    </nav-bar>
  </div>
</template>

<script>
import NavBar from "@/components/common/navbar/NavBar";
export default {
  name: "DetailNavBar",
  components:{
    NavBar
  },
  data(){
    return {
      titles: ['商品', '参数', '评论', '推荐'],
      currentIndex:0
    }
  },
  methods:{
    titleClick(index){
      this.currentIndex=index
      this.$emit('titleClick',index)
    },
    backClick() {
      this.$router.go(-1)
    }
  }
}
</script>

<style scoped>
   .title{
     display:flex;
     font-size:13px;
   }
   .title-item{
     flex:1;
   }
   .active{
     color:var(--color-high-text);
   }
   .back img{
     margin-top:12px;
   }
</style>
